Adults 18 and older diagnosed as having an acute myocardial infarction (AMI)
It is suggested that data collection be completed on a real-time basis. This measure references all patients to improve process sensitivity at sites where few AMI patients are routinely discharged in a given measurement period.
Should real-time data collection present insurmountable institutional obstacles, consider using the following principal diagnosis codes (International Classification of Diseases, Ninth Revision, Clinical Modification [ICD-9-CM]) for identification of patient records for abstracting:
- 410 - AMI, with or without first decimal extensions in the set (0,1,2,3,4,5,6,7,8,9); as well as second decimal extensions in the set (0 or 1 only).
In addition to tracking the percentage of patients treated in less than 30 minutes, sites may choose to also track either the mean (average) or the median (middle point) of the data. Using the median is preferred. The median is the value of the middle item in the data set. The median value is preferred over the mean (average) value because it minimizes the impact of outlying data points.
For example, if one case of receiving thrombolytics took 120 minutes when the other 10 cases in the data set received them within 20 to 30 minutes, the mean would be about 34 minutes. However, the median for that same data set might be around 26 minutes, and would more accurately reflect the usual performance of the system.
Data can be collected weekly or monthly.